Paper guide for folding blades



A 9 1932 H. A. w. WOOD 1,870,542

PAPER GUIDE FOR FOLDING BLADES Original Filed $6131.. 8. 1928 2 Sheets-Sheet 'l &

*j/zzdr- Jazz 1435526047 Aug. 9, 1932. H. A. w. wobD 1,870,542

PAPER GUIDE F OR FOLDING BLADES Original Filed Sept. 8. 1928 2 Sheets-Sheet 2 J5 JW/rcZoT 1347x7921 T I W Patented Aug. 9, 1932 UNETD STATES PATENT OFFEQE HENRY A. WISE \VOOD, OF NEW YORK, N. Y., ASSIGNOR TO WOOD NEWSPAPER MA- CHINERY CORPORATION, OF NEW YORK, N. Y., A CORPORATION OF VIRGINIA PAPER GUIDE FOR FOLDING BLADES Application filed September 8, 1928, Serial No. 304,656. Renewed January 6, 1932.

This invention relates to the folding blade of a folding machine. The principal object of the same is to provide means, preferably carried by the blade, for engaging the paper '5 as it is doubled by the folding blade and keeping it out of the angle formed between the folding blade and its support so that the paper on both sides of the blade will be practically symmetrical in shape, thus preventing the paper on one half of the fold coming out longer than on the other half.

Reference is to be had to the accompanying drawings in which Fig. 1 is a sectional View of a part of a folding cylinder with a folding blade in position for starting to double the product and a preferred embodiment of the invention applied thereto;

Figs. 2, 3 and 4 are similar views showing other steps in the folding operation; and

Fig. 5 is a view showing the final step of the folding operation.

In the ordinary action of a folding blade there is a tendency of the paper to crowd into the corner made between the folding blade and the folding cylinder. This being a sharp corner substantially of right angular form, the paper tends to form a sort of a fold at that point and also the paper on the two sides of the folding blade is apt not to come out even.

For the purpose of avoiding this difliculty, I have provided the triangular space between the folding blade and its support with a shield so as to keep the paper from moving into the angle. I have shown the folding cylinder 10 as provided with a rotary support 11 carrying the folding blade 12 of the usual construction. This folding blade acts in the usual way as indicated by the several figures. The shield 13, which I have shown, is secured to the support 11 and is in the form of a piece of sheet metal bent outwardly from the support at the base of the blade and inwardly on a gradual curve and into contact with the blade 12 near its edge.

It will be seen that the blade works in the usual way until it gets to the position shown in Fig. 4. Here the shield is engaged by the 50 pape being folded, keeping this paper out of the corner 14 between the blade and its support. This prevents a sharp corner being formed in the paper and also prevents more paper being located on one side of the blade than on the other.

After the blade passes the point shown in Fig. 4, the paper naturally comes back against one of the folding rolls 15 and has no tendency to move back against the shield 13.

The paper comes through folded properly in the center and without any wrinkle. The paper is made to follow the groove prepared for it by the folding rolls and it will not be crowded into the corner 14.

- Although I have illustrated and described only one form of the invention, I am aware of the fact that modifications can be made therein by any person skilled in the art without departing from the scope of the invention as expressed in the claims. Therefore, I do not wish to be limited to all the details of construction herein shown and described, but what I do claim is 1. The combination of a. folding blade for a folding machine with a shield for preventing the paper from crowding into the corner next to the butt of the blade.

2. The combination with a folding blade and its rotary support, of a shield carried by the support and extending beyond the support and then inwardly toward the blade for preventing the paper from crowding into the corner formed at the base of the blade.

3. The combination with a folding cylinder, a rotary support carried thereby and a blade carried by said support, of a shield secured to the support and projecting outwardly therefrom in a gentle curve and then over into contact with the blade at a point near the edge thereof, for the purpose described.

4. In a folding machine, the combination with a folding cylinder and a blade carried thereby, of a shield projecting outwardly from the base of the blade in a gentle curve and then back substantially into contact with the blade at a point near the edge thereof, for the purpose described.

5. In a folding machine, the combination with a folding blade, of a shield therefor extending outwardly and then inwardly toward the blade for preventing the paper from crowding into the corner formed at the base of the blade.

5 6. The combination with a folding cylinder, of a folding blade and means movably mounted on the cylinder for receiving the paper against it and holding it out in a gentle continuous curve.

I 7. The combination with a folding cylinder and a rotary support thereon carrying a folding blade, of a shield carried by said support for preventing the paper crowding back against the blade.

8. The combination with a folding cylinder, of a folding blade and a shield movably mounted on the cylinder and having an edge and a gentle outward curve backwardly from said edge.

9. The combination of a folding blade for a folding machine, with means for preventing the paper from crowding into the corner next to the butt of the blade.

10. A folding cylinder having a folding blade provided with means for preventing the paper from crowding into the space next to the butt of the blade.

11. A folding blade for a folding machine having means for preventing the paper from crowding into the space adjacent to the butt of said blade.

12. A folding blade for a folding machine having an outwardly flaring surface at the butt end thereof for keeping the paper away from the point of juncture between the blade and its support.

13. The combination of a folding cylinder with a folding blade having means outside A its plane for furnishing an area for contact with the sheet as it is being folded.

In testimony whereof I have hereunto affixed my signature.

HENRY A. WISE WOOD. 

